Crank-planer



(No Model.) I a Sheets-Sheet 1.

U., H. E. 82; P. L. EBERHARDT. 01mm: PLANER.

Pat d June 25, 1895.

(No Model.) l 3 sheets-snet 2. U., H. E. 81: F. L. EBERHARDT.

CRANK PLANER- 7 (guns 25, 1895.

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(No Model.) 3 Sheets-Sheet s. Q 1]., H. E. 8?; P- L. EBERHARDT.

CRANK. PLANER.

Patented June 25, 1895.

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UNITED STATES PATENT OFFICE.

ULRICH EBERHARDT, HENRY E. EBERHARDT, AND FRED L. EBERHARDT, OF NEWARK,NElV JERSEY.

CRANK-PLANER.

SPECIFICATION forming part of Letters Patent No. 541,475, dated June25,1 895.

Application filed April 20, 1894. Serial No. 508,261. (No model.)

To all whom it may concern:

Be it known that we, ULRICH EBERHARDT, HENRY E. EBERHARD'I, and FRED L.EBER- HARDT, citizens of the United States, residing at Newark, Essexcounty, New Jersey, have invented certain new and useful Improvements inCrank-Planers, fully described and represented in the followingspecification and the accompanying drawings, forming a part of the same.

The present invention relates partly, to a means for actuating avertical feed upon the ram, partly, to an improved means for indicatingthe adjustmentof the speed gearing, and partly, to a means for bracingthe work holding vise or table.

The invention will be understood by reference to the annexed drawings,in which- Figure l is a side elevation of a crank-planer provided withthese improvements. a plan of the same, taken in section'on line a: w inFig. 1. Fig. 3 is a front view of the slotted standard. Fig. 4 is avertical section on line y y in Fig. 1. Fig. 5 is an end View, and Fig.6 a plan, of the friction-box for the feed-rod. Fig. 7 is a sectionsimilar to Fig. 4 with an alternative arrangement for the speed-gearing.Fig. 8 is a vertical section at the center of the ramhead, and Fig. 9 isa horizontal section through the same on line .2 z in Fig.8.

The machine is shown with a box frame A,

and the speed gearing is shown inclosed wholly within such box in Figs.1, 2 and 4.

B designates the ram; 0, the cross head upon the front of the frame; D,the saddle moved horizontally thereon by feed screw E in the usualmanner.

F designates a box table attached to the front of the saddle and formedwith vertical faces F having horizontal slots G therein.

' The vise H is mounted upon the top of the table, as is common in suchmachines. The frame is formed with a base I, which is extended beyondthe front of the frame to form a bed-plate J. The bed-plate has a planehorizontal surface, and slots K for securing large work-pieces.

upon any work piece fastened in the vise or upon the table, tends tothrust the table downward, and to resist such thrust a stand- Fig. 2 isThe strain of the tool ard is affixed to the outer portion of the tableand supported at its lower end upon the smooth surface of the bed plateJ. Such a standard, L, provided with vertical slot L and horizontallyspreading foot M is shown standing upon the bed plate J with its sideapplied to the vertical faceof the table F, and clamped thereto by boltG inserted through the slot L into one of the table slots G. A screw Nis fitted in a nut N upon the front of the base and is provided withgears '12. and n, which are rotated by a shaft 'n to raise and lower thecross head. When adjusted, the cross head is clamped by bolts 0, andwhen thus adjusted at a suitable height,

the standard L is correspondingly adjusted by slackening the bolt G,pressing the foot of the standard upon the bed plate J, and thentightening the bolt G to secure the standard rigidly to the table. Thefoot of the standard is shown with sharp angles at its corners m, and isfreely movable upon the bed plate J while the saddle D is fed longitudinally along the cross head 0, during the operation of the machine.The table and vise are thus supported against the thrust of the tool,and the out is more perfectly pai allel with the .bed plate, than if thetable .were allowed to yield. The standard is made with a vertical facewhere it is fitted against the table F, and such'vertical face adapts itto apply adjustably to any portion of the table when the cross head israised orlowered. The shape of the table is therefore immaterial, and asingle bolt hole in the table would operate adj ustably to secure thestandard, in conjunction with the slot therein.

In Figs. 1 and 4, P designates the arm for vibrating the ram, formedwith slot Q to receive the block of the crank pin Q, which is fixedadjustably in the crank gear R.

S designates the pulley shaft extended transversely through the boxframe, and '1 an intermediate shaft similarly arranged between the sameand the bearing R of the crank gear.

S designates a speed pulley upon the outer end of the shaft S, and U, U,designate pinions of different sizes connected rigidly together andfitted movably over a spline it upon the shaft S.

V, V, designate two pinions upon the shaft T adapted to pair reverselywith the pinions U, U. A dog is mounted upon a rock shaft X which isextended through the rear of the box frame and provided upon its outerend with a vertically projecting hand-lever X. The dog is formed as acrank W projected at one edge of the gear U and provided with pins WV atopposite edges of the gear. The shifting of the handle X operates toslide the pinions U, U, simultaneously upon the shaft S; so as to shifteither of these pinions into gear with the pinions V, V.

The pinion U is shown meshing with the pinion V, and being smaller thanthe latter is adapted to transmit a reduced speed from the shaft S tothe shaft T.

The sharp corners upon the foot of the standard L are adapted, as thefoot slides over the surface of the bed plate J, to push the chips andgrit before it, and thus prevent the same from crowding under thestandard and pressing it upward; which would affect the horizontality ofthe table F and vise H. The slots K are provided in the bed platechiefly to per, mit the escape of the chips and grit from beneath suchfoot, as it is pushed along by the sharp corners m; as the slots in sucha bed plate are seldom of use to hold a work piece by bolts fitted insuch slots, as few work pieces would reach up as high as the tool d.

By shifting the dog, as shown in Fig. 4, to. the right, the pinion Uwould slide out of gear with the pinion V, and the pinion U would meshwith the pinion V, and being larger than the latter, would transmit anincreased speed from the shaft S to the shaft T. The pinions U, U, areshifted simultaneously, and a single movement of the shifting mechanismthus operates to change the adjustment of the gearing, to vary the speedof the crank wheel at pleasure.

In Fig. 7 the pinions U and V are shown outside of the box frame,and asliding rod Y is shown arranged parallel with the shaft S, and providedwith arms Y adapted to shift the pinions U and U simultaneously. Theshaft X is shown arranged beneath the rod Y and transverse thereto, andthe arm W is provided at the top with a notch or open slot W fitted to apin WV upon one of the arms Y; by which the rod and the arms are movedby the actuation of the hand lever X.

In Fig. 4, the vibrating arm is shown hinged upon the shaft T; but inFig. '7, the lower end of the arm is shown in the rear of the shaft,where it would be hinged upon asuitable stud. By the simple addition ofthe intermediate shaft T, and the reversely arranged pinions U, U, V, V,with the means for shifting two of the pinions simultaneously, theranges of speed afforded by the steps upon the cone S may be doubled,and the change of speed effected by the pinions may be instantly secured by a single movement of the lever X. The speed pulley in Figs. 2and 4 is shown with four faces to produce four changes of speed, and theaddition of the intermediate shaft therefore doubles the range of speedattainable upon such pulley. The variation produced in the speed of themachine by shifting the lever X, and the stroke to which each of theseveral speeds is adapted, are indicated to the eye by an attachmentshown in Fig. 4. Such attachment consists in an index plate j shownmounted at one edge of the speed pulley, and provided with two scales7t, bearing figures opposite the belt faces upon the speed pulley, andshowing respectively the proper strokes for the ram in a machine capableof twenty-four inch stroke, when actuated by placing the driving beltupon the corresponding belt face with the hand-lever X moved in aspecific direction. The proper movements for the hand-lever tocorrespond with the two scales are indicated by arrow heads Z, Z,applied respectively to such scales, and pointing respectively in thetwo directions in which the hand lever may be moved. The arrow head Zpointing to the right indicates thatthe shifting of the handlever to theright would produce an augmented speed of the ram, which with the beltapplied to the several belt faces, would be suitable respectively forthe strokes of two, four, seven,and nine inches. The arrow head Zpointing in the opposite direction, indicates that the four speeds ofthe speed cone would be suitable respectively for strokes of thirteen,sixteen, twenty, and twenty-four inches. The various speeds would alsobe used, as is common in such machines, for the strokes intermediate tothose upon the index. It is obvious that the scale may be fixed upon theframe adjacent to the hand-lever X with the understanding that the arrowheadsindicate corresponding movements of the handlever, and that thefigures upon the scale relate to the several belt faces upon the speedpulley.

In Fig. 1, a feed wheel a is shown mounted upon a stud a upon the sideof the ram adjacent to the disk 1) upon which the ram head 0 is swiveledin the usual manner. Such feed wheel constitutes the main feed gear forthe vertical feed of the tool. The ram head 0 is provided withvertically movable slide d having a feed screw 5 which is intermittinglyrotated by a gear 6 affixed upon a transverse shaft 6, and meshing withthe gear a.

f designates an arm pivoted upon the stud. a, and carrying a pawl g toactuate the wheel a. A rod 7% formed with offset h is jointed to the armf and extended backward parallel with the side of the ram through afriction. clamp i. The rod passes loosely by an eye forming a stop 7'upon the ram, and is provided at opposite sides of the stop with theoffset bend h and a set screw collar 70. The rod 7?. is formed withopposite smooth parallel surfaces so as to offer only a frictionalresistance tothe clamp.

The friction clamp, as shown in Figs. 5 and 6, consists in a blockgrooved longitudinally to admit the rod h, and having a cap Z clampedadj ustably by screws Z to produce a regulated pressure upon the rod.The cap and block are preferably lined with leatherp to increase thefriction, and to compensate for the oscillation of the rod, whereattached tothe arm f, the block is swiveled to a stationary bearing q bya lateral stud p and nut The bearro ing q is bolted upon the frame atthe side of 2o meshing with the pinion s, and its inner facethe ram. Aknob h is provided on the rod h to shift the same by hand. Figs. 8 and 9show the arrangement of the gearing for rotating the screw 8 which feedsthe slide d. The head a is formed with a nut c? in the top above anaperture c in which is mounted a pinion s fitted movably to a splineupon the screw 8. A double bevel geart is fitted to an aperture t in thecenter of the head 0, its outer face meshing with a similar pinion 6upon the shaft 8. Only one of the pinions is shown in each of the Figs.8 and 9, the relation of the other pinion to the wheel t being indicatedmerely by a dotted circle; as the section planes in these figures removesuch pinions from the view. The rotation of the shaft when actuated bythe wheel a and pawl g, thus rotates ,the feed screw 8 and actuates theslide as deo sired; while the usual handle 3 upon the top of the feedscrew may be independently used to move the slide up or down. In theforward movement of the ram the friction box being stationary, pulls therod backward until the offset h is in contact with the stopj, thusretracting the pawl, as shown in Fig. 1. By the backward movement of theram, the friction upon the rod pushes it forward, thus pushing the pawland wheel a forward,-and actuating,

the feed screw as desired. The tool d is shown secured to the slide bythe usual tool post d The movement of the pawl and the rate of feedproduced thereby, are governed by the adj ustment of the collar 70 inrelation to the offset h and stopj, and when once set for a'given rateof feed, are unaifected by any change of stroke or speed of the ram. Therod 71. may be made straight and a collar substituted for the bend oroifset h, the latter being used merely to bring the'rod down closeto thetop of the frame.

Having thus set forth the nature of the invention, what is claimedherein is- 1. In a planer, the combination, with the main feed gear, ofan oscillating arm having a pawl applied to the gear, a feed rodextended from such an arm and having opposite smooth parallel surfaces,and afriction clamp secured to the frame of the planer and clamped uponthe opposite parallel surfaces of the feed rod,

as herein set forth.

2. In a planer, the combination, with the adjustable ram head 0 providedwith the tool slide and feed screw 8, of gearing mounted upon the ramfor rotating the screw, an OS- cillating arm having a pawl applied tothe main feed gear, a feed rod extended from such arm along the side ofthe ram, and a friction clamp secured to the frame of the planer andclamped upon the feed rod, as herein set forth.

3. In a planer, the combination, with the the feed rod, a bearingattached to the main frame and a swivel connection between such frictionbox and bearing, as herein set forth.

4. In a crank planer, the combination, with the ram provided with thedisk I), of the transverse shaft e inserted in the edge' of such disk,the pinion e and feed gear a and pawl g for actuating the shaft, theadjustable head 0 provided with the double bevel gear 6, the slide (1carrying the tool post 'and the pinion 3 within such head and the screw8 fitted to a spline within such pinion, as herein set forth.

5. In a crank planer, the combination, with the frame havingthe crosshead 0 provided with means for adjusting the same vertically upon theframe, and having a saddle movable thereon with the table F, of the basehaving a bed plate projected beneath the table F, and a standard boltedadj ustably to the table and fitted at its lower end to slide upon thebed plate, substantially as herein set forth.

6. In a crank planer, the combination, with the frame having a baseprovidedwith the plane bed plate J, and having the cross head O withscrew N for elevating and sustaining the same, of the saddle movableupon the cross head and carrying the table F, of the slotted standard Lbolted adjustably to such table and having a foot adapted to slide uponthe bed plate, as herein setforth 7. In a crank planer, the combination,with the frame having a base provided with the slotted bed plate J, andhaving the cross head 0 with screw N for elevating and sustaining thesame, of the saddle movable upon the cross head, the box table withvertical slotted side secured to the saddle, the slotted standard Lclamped adj ustably to the slotted side of the table and having a footto slide upon the bed plate, as herein set forth.

8. A crank planer comprising a suitable frame carrying the ram B, thecrank gear R with lever connection to the ram,-the intermediate shaft Tmounted transversely beneath the same and provided with thepinions V, V,the pulley shaft S provided with cone S and the reversely arrangedpinions U,'U', the shaft X projecting from the rear of the frame andprovided with the upright lever X, and with means for simultaneouslyshifting the pinions U, U, a scale supported at the side of the speedpulley with two sets of figloo IIO

nres upon such scale indicating respectively I our hands in the presenceof two subscribing suitable strokes for the ram with the leverwitnesses.

moved to the right and the left, and the re- ULRICH EBERIIARDT. verselyarranged arrow heads Z, Z, indicating HENRY E. EBERI-IARDT. thepositions of the hand-lever corresponding FRED L. EBERHARDT. to the twosets of figures, the whole arranged Witnesses:

and operated as herein set forth. JOSEPH B. PIERSON,

In testimony whereof we have hereunto set THOMAS S. CRANE.

